shell:$ nslookup -timeout=2 -retry=1 'z-m-scontent-iad.xx.fbcdn.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	z-m-scontent-iad.xx.fbcdn.net
Address: 31.13.66.36
Name:	z-m-scontent-iad.xx.fbcdn.net
Address: 2a03:2880:f103:84:face:b00c:0:14c9